2 nd International Symposium on Non-Destructive Testing for Design Evaluation and Construction Inspection

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1 2 nd International Symposium on Non-Destructive Testing for Design Evaluation and Construction Inspection 25 April 2008 Ljubljana, Slovenia Dr. Andrew Wimsatt TTI Dr. Monica Starnes SHRP 2

2 SHRP 2 Renewal Research we are developing tools and techniques to facilitate a GET IN, GET OUT, STAY OUT strategic approach to highway renewal

3 Goals Rapid Approaches To develop an approach to performing highway renewal that Long-Lasting Facilities Successful Renewal Minimal Disruption is rapid causes minimum disruption produces longlasting facilities

4 R06. Plan for Developing High-Speed NDT Procedures for Design Evaluation and Construction Inspection May 2008 Goal Developing a process to identify existing or, if necessary, to develop new and quickly implementable technologies Report documenting Anticipated Product Identification of parameters that need to be measured Plan to assess applicability of current promising technologies and techniques Plan to develop new testing methods

5 Development of an R&D Plan with Focus on Highway Renewal NDT technologies that can produce results ideally in real time or at least within 48 hours. Emphasis on 100% coverage devices Emphasis on in situ testing

6 Development of an R&D Plan with Focus on NDT for three applications: Design Construction (QA Tools) Performance Monitoring And the following highway components: Bridges Pavements Earthworks Tunnels Other Structures (i.e., retaining walls)

7 Research Team Principal Investigator Andrew Wimsatt bridges & pavements, forensics Team Tom Scullion pavements & bridges, forensics, NDT implementation Emmanuel Fernando pavements, NDT implementation Roger Walker system automation Stefan Hurlebaus structural NDT & health monitoring Robert Lytton NDT development & geotech Dan Zollinger rigid pavements

8 Information Gathering Literature review Questionnaires: US Departments of Transportation FEHRL Visits to six DOT s: California, Florida, New York, Minnesota, Texas, Washington Dialogue with academia, research labs, and NDT consulting industry 1 st International Symposium on NDT

9 NDT used by U.S. agencies Falling Weight Deflectometers Inertial profilers Nuclear Density Gauges MIT-Scan Friction (skid resistance) Profilographs Acoustic Emissions

10 NDT used by U.S. agencies Ultrasonic testing Laser scanning Magnetic particle testing CrossholeSonic Logging Rebound hammer Covermeters or pachometers Ground Penetrating Radar IR

11 NDT under consideration by some U.S. agencies Thermal integrity testing of drilled shafts X-ray backscatter technology

12 NDT under consideration by some U.S. agencies Intelligent compaction Sliding profiler

13 Prioritization & Ranking How effectively does the recommended NDT address highway renewal needs? Could the technology or technique provide approximately 100% coverage? Would the NDT technology or technique be quickly implementable? Would the NDT technique result in significantly higher speed testing than is currently available?

14 Top Recommendations for R&D Design Construction Performance Automated methods of profiling bridges Changes in tunnel profile over time Identification of deterioration of bridge decks High speed continuous deflection device for pavements New NDT for construction QA Methods for pavement interlayer bonding

15 Types of Projects Proposed Unfulfilled needs Successful NDT technique still unidentified Experimental research NDT need identified and several technologies could be used to address it Focused development Promising technology where more development is needed Demonstration NDT techniques implemented in a few agencies but not widely used

16 Unidentified Techniques Design Construction Performance Automated methods of profiling bridges Changes in tunnel profile over time Identification of deterioration of bridge decks High speed continuous deflection device for pavements New NDT for construction QA Methods for pavement interlayer bonding

17 U1: Detecting Movement in Structures with Inertial Profile and Video Data Focus on developing a method for periodically monitoring profiles from bridges or other such structures by developing a data base of their characteristics. Anticipated Products tool for collecting and analyzing network level bridge profile data for noting changes in these structures and how these changes can be used along with other NDT methods for determining bridge status

18 U1: Detecting Movement in Structures with Inertial Profile and Video Data Task 1 Review recent R&D work of network level NDT video and profile systems Task 2 Develop and/or improve existing hardware/software needed for identifying the characteristics of the structure Select set of bridges and gather current/past maintenance records and available profile/video data Develop baseline signatures for selected bridges Compare and evaluate surface profiles from previous years

19 U1: Detecting Movement in Structures with Inertial Profile and Video Data Task 3 Develop procedures for periodic monitoring of bridges using inertial profile and video data. Work with at least one public agency and test procedure at their sites. Refine procedures based on field testing Task 4 Document procedures, user s manuals for developed hardware/software. Recommendations for implementation

20 Experimental Research Project Design Construction Performance Automated methods of profiling bridges Changes in tunnel profile over time Identification of deterioration of bridge decks High speed continuous deflection device for pavements New NDT for construction QA Methods for pavement interlayer bonding

21 E1: Nondestructive Testing to Identify Delaminations between HMA Layers Focus on Identifying and developing NDT methods and procedures capable of locating and characterizing areas of delaminations between HMA layers Anticipated Products Comprehensive review and documentation of existing procedures and equipment used Development and documentation of a rapid economical NDT method Documented field verification of recommended nondestructive testing procedures/equipment.

22 E1: Nondestructive Testing to Identify Delaminations between HMA Layers Phase I Review of NDT methods presently used Proposal of a R&D plan to validate recommended methods Phase II Modifications, if needed, to the recommended procedures/equipment Controlled lab testing and validation Field testing for those techniques proven to be successful in the first evaluation Documentation of recommended technologies and procedures

23 Focused Development Projects Design Construction Performance Automated methods of profiling bridges Changes in tunnel profile over time Identification of deterioration of bridge decks High speed continuous deflection device for pavements New NDT for construction QA Methods for pavement interlayer bonding

24 F1: Nondestructive Testing to Identify Bridge Deck Deterioration Focus on Evaluating strengths and limitation of existing techniques, identify best suited techniques, characterize accuracy and reliability on the field, develop protocols for most effective application Anticipated Products Documentation of existing procedures and equipment Development and documentation of a rapid, economical test or tests to be used to determine the presence, extent, and cause of deterioration Documented field verification of recommended nondestructive testing procedures/equipment

25 F1: Nondestructive Testing to Identify Bridge Deck Deterioration Phase 1 Technology Assessment Literature search Evaluate existing systems in laboratory Identify promising applications Phase 2 - Field Study Demonstrate most promising applications in field Characterize accuracy and reliability Phase 3 Protocol Development

26 F2: Development of Continuous Deflection Sensors Vibrosis Equipment

27 F2: Development of Continuous Deflection Sensors Devices available to put loads (vibratory or rolling wheel) on pavements Need for sensors and software to a)measure pavement deflections at higher speed b)remove surface noise from signal c) Measure movement on either side of joint

28 F2: Development of Continuous Deflection Sensors Focus on Developing the next generation sensors for measuring concrete pavement deflections under load Anticipated Products New sensor array for a deflection device Data acquisition unit and data acquisition software User s Manual

29 F3: Using Field Spectroscopy Devices to Fingerprint Construction Materials Focus on -Evaluating the practical application of XRF, FTIR or RAMAN for quantitative analysis of paving materials -Develop draft test protocols and equipment specifications Potential Applications - polymer content of asphalt -quality and uniformity of lime and cements -uniformity of asphalt emulsions -sulfate content of soils Anticipated products - Recommendations on equipment availability, capabilities, reliability, cost, etc -Test results from typical construction materials -Draft test procedures

30 Field Spectroscopy Devices XRF, FTIR, Raman XRF XRF x-rays at atomic level Raman ( Laser Excitation of Molecules) FTIR INTENSITY COMPARED TO STANDARDS

31 F3: Using Field Spectroscopy Devices to Fingerprint Construction Materials Phase 1 - Lab Study Evaluate existing commercial systems in laboratory Identify promising applications Phase 2 - Initial Field Study Demonstrate most promising applications in field Recommendations on how to implement technology Develop implementation plan and training materials Phase 3 - Implementation in DOT s Purchase equipment for DOT use Training program

32 F4: Strength Determination and Integrity Evaluation of Concrete Pavement and Bridge Deck Repairs Using Seismic Techniques Focus on - Improving existing seismic techniques for this application - Developing the necessary correlations between seismic stiffness/wave speed and engineering properties (strength and modulus of rupture) Anticipated Products Improved seismic techniques Experimental procedures for establishing target levels for seismic stiffness values Training materials on the developed methodologies / implementation Plan for implementation of the developed methodologies

33 F4: Strength Determination and Integrity Evaluation of Concrete Pavement and Bridge Deck Repairs Using Seismic Techniques Phase 1 Review of promising technologies Modify technique/technology as needed to improve performance Use recommended seismic technique(s) on several construction projects in one State Validation testing -validate that the NDT measurements do correlate with significant engineering properties Plans on how to conduct similar tests in at least five additional DOT s Phase 2 Field testing -Conduct tests at five DOT s Develop training material and recommendations for implementation

34 F5: Real-Time Smoothness Measurements during PCC Pavement Construction Focus on - Developing new and/or improving existing technologies Anticipated Products Validated quality control methods for smoothness measurements during concrete placement Application guidelines Process for technology implementation

35 F5: Real-Time Smoothness Measurements during PCC Pavement Construction Proposed Work Plan Technology review Test existing technology q Identify methods to test q q q Plan test program Conduct tests Identify additional development needs Perform development work hardware software procedures manual Test improved methods Recommendations for implementation

36 Demonstration Projects Design Construction Performance Automated methods of profiling bridges Changes in tunnel profile over time Identification of deterioration of bridge decks High speed continuous deflection device for pavements New NDT for construction QA Methods for pavement interlayer bonding

37 D/F1: Monitoring Change in Tunnel Profiles Focus on Identifying and improving NDT scanning systems and techniques to offer 100% coverage Anticipated Products Validated NDE techniques for condition assessment and monitoring of tunnel linings Application guidelines Process for technology implementation

38 D/F1: Monitoring Change in Tunnel Profiles Phase I - Demonstration Review state-of-practice European experience Japanese experience Plan & conduct demonstration Phase II - Development Development work, where needed (hardware, software, etc) Verification testing of enhanced or modified tunnel laser scanning techniques Phase III Implementation Plan

39 D2: Infrared and GPR for Uniformity Measurements on New HMA Layers Focus on - Developing and field testing prototype specifications - Demonstrating technologies to DOT s Anticipated Products Develop/refine test procedures Develop training materials Develop implementation plan

40 New 100% QC/QC Coverage Devices tools for QC/QA HMA testing Overlays of new HMA layers

41 D2: Infrared and GPR for Uniformity Measurements on New HMA Layers Phase 1 Evaluate and select equipment Develop training materials Demonstrate technology in one DOT Perform validation coring Phase 2 Propose Draft Specifications Demonstrate approach in additional DOT s Provide Training Develop framework for Operator and Equipment Certification

42 D3: Smoothness Specifications Based on Inertial Profilers Focus on - Demonstrating technology to transportation agencies - Development of tools for wide implementation Anticipated Products Specifications Equipment and operator certification Training program and tools

43 D3: Smoothness Specifications Based on Inertial Profilers Phase I Document successful implementation of this technology Plan demo projects Phase II Conduct demonstration projects Provide assistance in one or more of the following target areas: q Specification development q Equipment and operator certifications q Training q Shadow testing on pilot projects Review of implementation experience and recommendations

44 Top Recommendations for R&D Unfulfilled Need Automated methods of profiling bridges Experimental Research Methods for evaluating pavement interlayer bonding Focused Development Identification of deterioration of bridge decks High speed continuous deflection device for pavements Field spectroscopy devices for construction QA Seismic technique for QA of concrete pavement and bridge decks Real-Time Smoothness measurements Demo + Focused Development Changes in tunnel profile over time Demonstration GPR + IR for testing HMA layers Smoothness Specs based on Inertial Profilers

45 Other projects considered Better NDT tools for mapping projects Resistivity Mapping Validation Tools for QA of earthworks Intelligent Compaction Validation tools for QA of drilled shafts Gamma-Gamma Logging and Thermal Integrity Network of National Calibration & Certification Centers Foundation investigation tools New technologies for mapping unknown bridge foundations Distress measurements Etc (up to 30 needs/potential projects identified in total)

46 THANK YOU SHRP 2 Highway Renewal Monica Starnes mstarnes@nas.edu Andrew Wimsatt A-Wimsatt@ttimail.tamu.edu

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